000199382 001__ 199382
000199382 005__ 20190604054640.0
000199382 0247_ $$2doi$$a10.1007/s00226-014-0645-0
000199382 02470 $$2ISI$$a000338136000014
000199382 037__ $$aARTICLE
000199382 245__ $$aLinear friction welding of spruce boards: experimental investigations on scale effects due to humidity evaporation
000199382 269__ $$a2014
000199382 260__ $$bSpringer$$c2014$$aNew York
000199382 300__ $$a17
000199382 336__ $$aJournal Articles
000199382 520__ $$aRecent investigations on friction welded wood-to-wood connections have shown interesting capacities of these adhesive free joints for further development towards constructional elements. This paper addresses challenges and technical requirements for the enhancement of this technology from small specimens to samples of structural scale. Inhomogeneities in bonding quality and joint strength, herein referred to as scale effects, become relevant with an increase in size of the welded interface. It is assumed that the water vapour and smoke that evolves during the welding process by evaporation of moisture within the cell structure is a reason for these inhomogeneities. In order to achieve a better understanding of these effects, the influence of the water vapour on welded spruce (Picea abies) boards was investigated. It is shown that the vapour increases the internal gas pressure within the welding zone. Thus it strongly influences the welding process and the quality of the joint. The results of these investigations lead to technical solutions, permitting a significant attenuation of the negative effects and an improvement in quality and joint resistance.
000199382 6531_ $$awood bonding
000199382 6531_ $$afriction welding
000199382 6531_ $$amoisture content
000199382 6531_ $$ascale effects
000199382 6531_ $$atemperature measurement
000199382 700__ $$0243420$$g192707$$aHahn, Benjamin
000199382 700__ $$0241189$$g124913$$aStamm, Bernhard
000199382 700__ $$aWeinand, Yves$$g156151$$0243417
000199382 773__ $$j48$$tJournal of Wood Science and Technology$$k4$$q855-871
000199382 909C0 $$xU10236$$0252195$$pIBOIS
000199382 909CO $$particle$$pENAC$$ooai:infoscience.tind.io:199382
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x192707
000199382 917Z8 $$x148230
000199382 937__ $$aEPFL-ARTICLE-199382
000199382 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000199382 980__ $$aARTICLE